VBA Help to Run Code to Stack Data

[zalik22]

Hi, I have 4 files on a folder called "StackTest" on my desktop. I want to filter each file and paste the data on an open tab named "Combined Data".

I have the macro below that filters data, which works but I am unsure how to loop through the folder and paste on the first empty cell of the "Combined Data" spreadsheet.

Sub FilterColumns()
'Application.ScreenUpdating = False

Dim rngKeywordsFound As Range, _
rngAgentGroup As Range


'Start of function to delete unwanted rows and columns
Sheets("Calls").Select
With ActiveSheet.Cells
Set rngAgentGroup = .Find("Agent Group", LookIn:=xlValues, LookAt:=xlPart)
Set rngKeywordsFound = .Find("Keywords Found", LookIn:=xlValues, LookAt:=xlWhole)
If Not rngAgentGroup Is Nothing And Not rngKeywordsFound Is Nothing Then
'AgentGroup and KeywordsFound found
If rngKeywordsFound.Column = rngAgentGroup.Column - 1 Then
'KeywordsFound column is adjacent to AgentGroup, clear only columns left of rngKeywordsFound
Range(Cells(1, 1), Cells(1, rngKeywordsFound.Column - 1)).EntireColumn.Delete Shift:=xlToLeft
ElseIf rngKeywordsFound.Column = 1 Then
'KeywordsFound is first column. Only clear columns between rngKeywordsFound and AgentGroup
Range(Cells(1, rngKeywordsFound.Column + 1), Cells(1, rngAgentGroup.Column - 1)).EntireColumn.Delete Shift:=xlToLeft
Else
'KeywordsFound column is not adjacent to AgentGroup. Clear columns between and then columns to left of rngKeywordsFound
Range(Cells(1, rngKeywordsFound.Column + 1), Cells(1, rngAgentGroup.Column - 1)).EntireColumn.Delete Shift:=xlToLeft
Range(Cells(1, 1), Cells(rngKeywordsFound.Column - 1)).EntireColumn.Delete Shift:=xlToLeft
End If
Range("A1:A" & rngKeywordsFound.Row - 1).EntireRow.Delete Shift:=xlToLeft
End If
End With
'End of function to delete unwanted rows and columns
End Sub